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frutty [35]
4 years ago
10

Any one know how to do this pls help

Mathematics
1 answer:
Fiesta28 [93]4 years ago
5 0

Answer:

f^-1(x) = [(x + 1)/2]^⅓

Step-by-step explanation:

y = 2x³ - 1

Make x the subject

2x³ = y + 1

x³ = (y + 1)/2

x = [(y + 1)/2]^⅓

Interswitch variables

f^-1(x) = [(x + 1)/2]^⅓

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Does anyone know how to find square root quickly?
Cerrena [4.2K]

Answer: The quick way is to square the half of it.

Step-by-step explanation: You divide your main number by 2 and figure out that half. If it is still too big, divide by 2 again. If you need to keep repeating that is fine. Thank you multiply your answer by however many times you divided by 2.

8 0
3 years ago
Read 2 more answers
System w/Elimination<br>-2x-9y=-25<br><br>-4x-9y=-25
Lerok [7]

x=0 and y=\frac{25}{9}

Step-by-step explanation:

We need to solve the system by elimination and find values of x and y

-2x-9y=-25\,\,\,(1)\\-4x-9y=-25\,\,\,(2)

Subtract eq(1) and eq(2)

-2x-9y=-25\,\,\,(1)\\-4x-9y=-25\,\,\,(2)\\+\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\---------\\2x=0\\x=0

Now Multiply equation (1) by 2 and subtract with eq(2)

-4x-18y=-50\\-4x-9y=-25\\+\,\,\,\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\--------\\-9y=-25\\y=\frac{-25}{-9}\\y=\frac{25}{9}

So, x=0 and y=\frac{25}{9}

Keywords: system by elimination

Learn more about system by elimination at:

  • brainly.com/question/6075514
  • brainly.com/question/2115716
  • brainly.com/question/4192226

#learnwithBrainly

5 0
3 years ago
What is the value of the expression below when a = -2, b = 3, C = -5<br><br> [a– 2ac + 56]
kozerog [31]

Answer:

34

Step-by-step explanation:

plug the coefficients in the equation, so

-2-2(-2)(-5)+56

Distribute the -2(-2)(-5), so it equals -20

so the equation is -2-20+56

add -20+56, so -2+36

-2+36=34

34 is your answer

5 0
3 years ago
Which relationship describes angles 1 and 2?
Aloiza [94]
Vertical angles

They are vertical angles because they are directly opposite each other and have equal measures.
8 0
3 years ago
What is the value of X? Remember to show calculations and formulas used for credit.
finlep [7]
(n-2) × 180<span>° = 4 x 180 = 720
so sum of interior angles = 720
x = 720 - (112+133+128+ 100+120) 
x = 720 - 593
x = 127

answer
x = 127</span>
8 0
3 years ago
Read 2 more answers
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